Lug strap



July 5, 1938 w. I. BULLARD LUG STRAP Filed April 10, 1936 Z Jfzbe 7M0? aitbzvigy Patented July 5, 1938 PATENT" 'oF'FICE LUG STRAP W. Irving Bullard, Danielson, Conn, assignor to Y E. H. Jacobs Manufacturing Company, Danielson, Conn.

Application April 10, 1936, Serial No. 73,668

1 Claim.

My present invention is a novel and improved lug strap suitable for use with both an arcor crescent-shaped lug strap, and a straight lug strap.

In my prior application Ser. No. 28,291, filed June 25, 1935, the advantages of an arcor crescent-shaped lug strap, formed with a longitudinal curve from heel to bolt slots, substantially or approximately following the curved path of travel of the picker stick with which the lug strap is designed to cooperate, results in greatly increased efficiency, longer life and wear, and a saving in power required.

In my present improved structure I have discovered that a block or plug in the heel of such an arc-shaped lug strap will operate more efficiently with the surface at the forward or picker stick striking-face of the plug, formed in a curved or arc-shaped contour, non-parallel with and hence diverging from the inner face of the heel of the lug strap.

Heretofore it has been customary in the construction of lug straps with a plug or block at the heel to have the picker-striking face in a plane perpendicular to the sides of the U-shaped arms, and I have discovered that by utilizing a block or plug with the convex striking surface greater increased efficiency is secured in this type of construction, effecting the striking action between the lug strap and picker stick more evenly,

uniformly, and in a manner to effectively eliminate vibration and, hence, to increase the smoothness of operation in the striking action.

While these lug straps are usually of textile material, they may also be made of metal, fibre,

or reinforced composition.

Accordingly, in my present invention of an improved convex-faced, block or plug for lug straps, both straight and arc-shaped, I have shown both 0 these constructions in the accompanying drawing, and wish to claim this feature of the convex-faced block in connection with the arcshaped lug strap and the straight lug strap, with which itmay be efficiently employed whether of textile material, metal, or other structure.

Referring to the drawing illustrating preferred embodiments of my present invention,

Fig. 1 is a side View of my novel type of arcshaped lug strap with the novel convex-faced plug;

Fig. 2 is a plan view of the same;

Fig. 3 is a side View illustrating my novel convex-faced plug in a straight lug strap, and 55 Fig. 4 is a fragmentary view illustrating the picker stick and its rocking action, and an arcshaped lug strap in operative position thereon.

Fig. 5 is a fragmentary view in perspective showing a metal lug strap; and a usual type of hold-up guide and holder, which may be adjusted on the picker stick to obtain the speed desired.

As shown in the drawing, an arc-shaped lug strap I, of interrolled textile material, with the usual bolt slots 22 formed near the ends of the arms is illustrated, and having a longitudinal arc'or crescent-shape between the forward ends of the U-shaped arms, and the heel portion 3 is indicated. These lug straps may be of any suitable length desired. Secured to the heel portion by a bolt 4 is a block or plug 5, having the picker-striking face It formed upon a convex curve. The curved striking face Hi may be varied somewhat but should be of suitable proportions to effect a rocking action on the back of the picker stick [2 during the picking operation.

I have illustrated a picker stick l2 in a typical construction at one side of the loom with which it cooperates, the picker stick [2 being attached to the rocker foot l4 adapted to rock upon a base I5, which may be adjustable longitudinally on a support l6, and is held by the spring I! bolted at l8 tothe picker stick l2, and with its other end engaging a bearing l9 attached to a strut 20 on the base 15. The usual guides 2| and 22 are shown, and the picker box 24 at .the top of the picker stick I2 is illustrated in partial or fragmentary form.

In Fig. 3 I have illustrated a straight form of lug strap 25 with the usual bolt slots 2 and heel portion 3, and, in this case, with the block or plug 30 secured by the bolt 4 and having a convex picker-striking face 33. In this form, the convex face 33 may be of slightly different contour than that of the convex striking face ID in the arc-shaped form of Figs. 1 and 2, but in both cases the convexity on the striking face of either plug 5 or 30 will insure a smooth, even rocking action between the lug strap and picker stick I2 during the picker operation, eliminating vibration, decreasing wear, and increasing the efficiency of operation.

In Fig. 5 I have illustrated a lug strap of metal, reinforced or the like, having my novel and improved curved striking face on a plug 42 held by a bolt 43 and with the bolt slots 44 at the open end of the U arms, plates, or rods. Also I have illustratedat 4| the usual type of hold-up, or guide, which may be secured to the picker stick at variable heights to thus vary intersection of the plug and the uppermost part of the arms, said striking face extending from said forward point downwardly and rearwardly in the form of an arc with no part of said are forwardly of its top portion, whereby chattering 5 is eliminated in the operation of the lug strap.

W. IRVING BULLARD. 

